Experimental evaluation of a neural-oscillator-driven active mass damper system

Daisuke Iba; Junichi Hongu

doi:10.1117/12.2045019

8 March 2014 Experimental evaluation of a neural-oscillator-driven active mass damper system

Daisuke Iba, Junichi Hongu

Proceedings Volume 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014; 90613M (2014) https://doi.org/10.1117/12.2045019
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

This paper proposes a new active dynamic absorber control system for high-rise buildings using a neural oscillator and a map, which estimates the amplitude level of the oscillator, and shows some experimental results by using an apparatus, which realizes the proposed control algorithm. The proposed system decides the travel distance and direction of the auxiliary mass of the dynamic absorber using the output of oscillator, which is the filtering result of structure acceleration responses by the property of the oscillator, and Amplitude-Phase map (AP-map) for estimation of the structural response in specific frequency between synchronization region, and then, transfer the auxiliary mass to the predetermined location by using a position controller. In addition, the developed active dynamic absorber system is mounted on the top of the experimental single degree of freedom structure, which represents high-rise buildings, and consists of the auxiliary mass, a DC motor, a ball screw, a microcomputer, a laser displacement sensor, and an acceleration sensor. The proposed AP-map and the algorithm to determine the travel direction of the mass using the oscillator output are embedded in the microcomputer. This paper starts by illuminating the relation among subsystems of the proposed system with reference to a block diagram, and then, shows experimental responses of the whole system excited by earthquakes to confirm the validity of the proposed system.

Citation Download Citation

Daisuke Iba and Junichi Hongu "Experimental evaluation of a neural-oscillator-driven active mass damper system", Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 90613M (8 March 2014); https://doi.org/10.1117/12.2045019

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KEYWORDS

Oscillators

Control systems

Sensors

Dynamical systems

Earthquakes

Motion measurement

Buildings

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